The Book of the Believer · Hadith 121 (#Ḥadīth #15)
Chapter 5 | The Reward of Helping a Believer, Relieving Him of Distress And Showing Him Kindness
121 - وعن الصادق عليه السلام: من فرج عن أخيه المسلم كربة فرج الله عنه كربة يوم القيامة، ويخرج من قبره مثلوج الصدر
121. It has been related that al-Sadiq said: One who relieves a distress from his Muslim brother, Allah will remove a distress from him on the Day of Resurrection and he shall come forth from his grave delighted.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).